Have to confess, never been a keeper nor have really any clue about the art of goalkeeping. For the second goal to me it seems like he's done what any keeper would do, cover the the near post for the shot and defenders would responsible for cutting out a cross. And sometimes you know what, an attacker just manages to get the perfect ball across.
Just looking back through the game and in this same game, Pogba's ball across the 6 yard box no different to the ball James put in, goes almost across the same line really Meslier is positioned exactly the same as DDG was, covering the near post and not a yard or so off his line and the ball gets to Ronaldo.
Again the same game, for Fred's goal, he is in a similar position to where James crossed from on the other side but, he takes the shot at the near post, Meslier a little more off his line and gets beaten at the near post, which is usually seen as the bigger sin for keepers to let a goal in that way.
So, anyone that is saying DDG is at fault for the cross not being gobbled up for the second goal, please give me a couple examples perhaps to educate myself a bit more about how other proper keepers to both, cover near post and able to easily collect crosses across the 6 yard box at the same time, I genuinely want to understand what am missing here of what was expected of him in that situation.